one more attempt to prevent int overflow on 32bit arches
one more attempt to prevent int overflow on 32bit arches

tuna-timer/tuna-timer-api,cleverua/tuna-timer-api,cleverua/tuna-timer-api,pavlo/slack-time,pavlo/slack-time,tuna-timer/tuna-timer-api,cleverua/tuna-timer-api,cleverua/tuna-timer-api,tuna-timer/tuna-timer-api